Lewis Beverage cup structure in the case of ammonia is portrayed by the valence electrons surrounding the N atom. The dot point arrangement for NH3 displays that the nitrogen atom joins a solitary pair of electrons with each of the three H atoms, resulting in a total of three joined pairs of electrons. The ammonia molecule takes a three-sided pyramid-like form because of the arrangement of the outer electrons according to its Electron pair Beverage cup arrangement. In the Lewis symbol representation of ammonia, the nitrogen atom is encircled by three dots, each representing a pair of shared electrons with a H atom.